Affiliation: | Jin Hee Noh, Do Hoon Kim, Hee Kyong Na, Ji Yong Ahn, Kee Wook Jung, Jeong Hoon Lee, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung, Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, South KoreaSo-Woon Kim, Young Soo Park, Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, South Korea |